feat: log peer disconnect info (#7231)

* feat: log disconnect reason

* feat: log peerScore update

* fix: pretty print peerId

* fix: use prettyPrintPeerId

packages/beacon-node/src/network/core/networkCore.ts

@@ -143,7 +143,7 @@ export class NetworkCore implements INetworkCore {
 
     const metrics = metricsRegistry ? createNetworkCoreMetrics(metricsRegistry) : null;
     const peersData = new PeersData();
-    const peerRpcScores = new PeerRpcScoreStore(opts, metrics);
+    const peerRpcScores = new PeerRpcScoreStore(opts, metrics, logger);
     const statusCache = new LocalStatusCache(initialStatus);
 
     // Bind discv5's ENR to local metadata

packages/beacon-node/src/network/peers/peerManager.ts

@@ -736,6 +736,7 @@ export class PeerManager {
     try {
       const reason = GOODBYE_KNOWN_CODES[goodbye.toString()] || "";
       this.metrics?.peerGoodbyeSent.inc({reason});
+      this.logger.debug("disconnected peer", {reason, peerId: prettyPrintPeerId(peer)});
 
       const conn = getConnection(this.libp2p, peer.toString());
       if (conn && Date.now() - conn.timeline.open > LONG_PEER_CONNECTION_MS) {

packages/beacon-node/src/network/peers/score/interface.ts

@@ -20,7 +20,7 @@ export interface IPeerRpcScoreStore {
 export interface IPeerScore {
   getScore(): number;
   getGossipScore(): number;
-  add(scoreDelta: number): void;
+  add(scoreDelta: number): number;
   update(): number;
   updateGossipsubScore(newScore: number, ignore: boolean): void;
   getStat(): PeerScoreStat;

packages/beacon-node/src/network/peers/score/score.ts

@@ -38,12 +38,13 @@ export class RealScore implements IPeerScore {
     return this.gossipScore;
   }
 
-  add(scoreDelta: number): void {
+  add(scoreDelta: number): number {
     let newScore = this.lodestarScore + scoreDelta;
     if (newScore > MAX_SCORE) newScore = MAX_SCORE;
     if (newScore < MIN_SCORE) newScore = MIN_SCORE;
 
     this.setLodestarScore(newScore);
+    return newScore;
   }
 
   /**
@@ -139,7 +140,9 @@ export class MaxScore implements IPeerScore {
     return DEFAULT_SCORE;
   }
 
-  add(): void {}
+  add(): number {
+    return DEFAULT_SCORE;
+  }
 
   update(): number {
     return MAX_SCORE;

packages/beacon-node/src/network/peers/score/store.ts

@@ -1,6 +1,7 @@
 import {PeerId} from "@libp2p/interface";
-import {MapDef, pruneSetToMax} from "@lodestar/utils";
+import {Logger, MapDef, pruneSetToMax} from "@lodestar/utils";
 import {NetworkCoreMetrics} from "../../core/metrics.js";
+import {prettyPrintPeerId} from "../../util.js";
 import {DEFAULT_SCORE, MAX_ENTRIES, MAX_SCORE, MIN_SCORE, SCORE_THRESHOLD} from "./constants.js";
 import {
   IPeerRpcScoreStore,
@@ -29,11 +30,13 @@ const peerActionScore: Record<PeerAction, number> = {
 export class PeerRpcScoreStore implements IPeerRpcScoreStore {
   private readonly scores: MapDef<PeerIdStr, IPeerScore>;
   private readonly metrics: NetworkCoreMetrics | null;
+  private readonly logger: Logger | null;
 
   // TODO: Persist scores, at least BANNED status to disk
 
-  constructor(opts: PeerRpcScoreOpts = {}, metrics: NetworkCoreMetrics | null = null) {
+  constructor(opts: PeerRpcScoreOpts = {}, metrics: NetworkCoreMetrics | null = null, logger: Logger | null = null) {
     this.metrics = metrics;
+    this.logger = logger;
     this.scores = opts.disablePeerScoring ? new MapDef(() => new MaxScore()) : new MapDef(() => new RealScore());
   }
 
@@ -55,8 +58,10 @@ export class PeerRpcScoreStore implements IPeerRpcScoreStore {
 
   applyAction(peer: PeerId, action: PeerAction, actionName: string): void {
     const peerScore = this.scores.getOrDefault(peer.toString());
-    peerScore.add(peerActionScore[action]);
+    const scoreChange = peerActionScore[action];
+    const newScore = peerScore.add(scoreChange);
 
+    this.logger?.debug("peer score adjusted", {scoreChange, newScore, peerId: prettyPrintPeerId(peer), actionName});
     this.metrics?.peersReportPeerCount.inc({reason: actionName});
   }